Then I checked that some L3 features are Up and running (If you have LAN_ENTERPRISE_SERVICES licensing model activated, it will be displayed “In use” right after you activate an advanced L3 feature like BGP – for more information regarding NX-OS licensing, please refer to Cisco NX-OS Licensing:

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Nexus-5548# sh feature | inc eigrp|vlan

eigrp1enabled

eigrp2enabled(not-running)

eigrp3enabled(not-running)

eigrp4enabled(not-running)

interface-vlan1enabled

private-vlan1disabled

So everything is fine but my port is still in a down/down state:

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Nexus-5548# sh int eth1/2 | inc "is down"

Ethernet1/2isdown(L3 notready)

Then I gave a look at the inventory to check the L3 daughter card and was quite surprised about the output

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Nexus-5548# sh invent | inc L3

NAME:"Module 3",DESCR:"O2 Non L3 Daughter Card"

PID:N55-DL2,VID:XX,SN:XXXXXXXXXX

It is very easy to misread this output (especially at 2am) because your eyes can focus on the “L3 Daughter Card” words and in fact you should read : “O2 NON L3 Daughter Card”

The N55-DL2 is the regular L2 card that is bundled with a regular Nexus 5548.

The N55-D160L3 or V2 is needed to allow the L3 ports to go in an up/up state 🙂

Pretty basic stuff but still interesting to remind.

Nicolas

PS: This command is very interesting to check if L3 is globally activated on your N5k

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Nexus-5548# show system internal btcm info

system status:L3 NotReady

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One thought on “Cisco Nexus L3 daughter card”

Me (I work for a major Cisco partner in Brazil) and the client’s engineer just mis-read that non L3 daughter card. That’s so frustating. At least we are missing both licensing and L3 daughter card. What a bummer!!